Hard to say, older games would always have both options open to PC platform just incase something went wrong with one system early on in the years.

Older GL's had some issues, such as texture seams, blocky textures due to linear aniso, lack of proper opacity in some cases and aliasing issues, not sure if HW2 has any of these issues that you can easily tell from right off the bat since it really depended on the dev.

I'm not sure if this works, but maybe you could go to your Graphics card profile and max out everything related to DX viewports, and if you switch it in game, you should see a difference between DX and GL, but I think only ATi has these options?

Again, not sure, and I can't think of any tools at the top of my head that would make real time hooking easy enough to tell you what is running what.

OK all, thanks for the replies! I got it. The idea with the DLLs was great because there was a gl.dll in the Homeworld directory AND via ProcMon i was able to find out that it tries to access a opengl32.dll in some system dir.

I found an awesome tool: GLintercept. It brings a new opengl32.dll and a config file which you copy in the directory of the game. Then just start the game and the tool will inject itself.

With it i was able to activate the wireframe directly in Homeworld with strg+w.

Awesome! Can i rename the title of this thread? Would like to add [SOLVED] to it